The links below have tutorials and practice for different Algebra I skills with which all Geometry students should be familiar.


Solving Two-Step Equations
One-Step Equations Video
https://www.khanacademy.org/math/in-seventh-grade-math/simple-equations/equation-definition/v/one-step-equation-intuition
Two-Step Equations Video
https://www.khanacademy.org/math/in-seventh-grade-math/simple-equations/equation-definition/v/why-we-do-the-same-thing-to-both-sides-two-step-equations
Two-Step Equations Video
https://www.khanacademy.org/math/in-seventh-grade-math/simple-equations/equation-definition/v/equations-2
Two-Step Equations Practice
https://www.khanacademy.org/math/in-seventh-grade-math/simple-equations/equation-definition/e/linear_equations_2
Solving Multistep Equations
Equations with Distribution Tutorial #1
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/complicated_equations/v/multi-step-equations
Equations with Distribution Tutorial #2
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/complicated_equations/v/multi-step-equations-2
Equations with Distribution Tutorial #3
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/complicated_equations/v/equations-with-variables-on-both-sides
Multistep Equations with Distribution Practice Set
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/complicated_equations/e/multistep_equations_with_distribution
Equations with Variables on Both Sides Tutorial
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/basic-equation-practice/v/equations-3
Equations with Variables on Both Sides Example #1
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/basic-equation-practice/v/multi-step-equations-1
Equations with Variables on Both Sides Example #2
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/basic-equation-practice/v/solving-equations-2
Equations with Special Cases Tutorial
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/basic-equation-practice/v/equation-special-cases
Equations with Variables on Both Sides Practice Set
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/basic-equation-practice/e/linear_equations_3
Slope
Slope Tutorial #1
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/slope-and-intercepts/v/slope-of-a-line
Slope Tutorial #2
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/slope-and-intercepts/v/slope-of-a-line-2
Slope Tutorial #3
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/slope-and-intercepts/v/slope-of-a-line-3
Graphical Slope of a Line Tutorial
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/slope-and-intercepts/v/graphical-slope-of-a-line
Slope Example
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/slope-and-intercepts/v/slope-example
Slope Practice Set
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/slope-and-intercepts/e/slope_of_a_line
Writing Linear Equations in Slope-Intercept Form
Writing Linear Equations in Slope-Intercept Form Tutorial
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/equation-of-a-line/v/linear-equations-in-slope-intercept-form
Writing Linear Equations from Graphs Tutorial
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/equation-of-a-line/v/graphs-using-slope-intercept-form
Writing Linear Equations Using the Slope and a Point Tutorial
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/equation-of-a-line/v/graphs-using-slope-intercept-form
Writing Linear Equations Given the Slope and a Point Tutorial
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/equation-of-a-line/v/equation-of-a-line-2
Writing Linear Equations Given Two Points Tutorial
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/equation-of-a-line/v/equation-of-a-line-3
Writing Linear Equations from Tables Tutorial
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/equation-of-a-line/v/slope-intercept-form-from-table
Writing Linear Equations in Slope-Intercept Form Tutorial
https://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/equation-of-a-line/e/slope_intercept_form
Simplifying Radicals


Tutorial #1
https://www.khanacademy.org/math/algebra-basics/core-algebra-foundations/square-roots-for-college/v/simplifying-square-roots-1
Tutorial #2
https://www.khanacademy.org/math/arithmetic/exponents-radicals/radical-radicals/v/simplifying-radicals
Practice Set #1
https://www.khanacademy.org/math/arithmetic/exponents-radicals/radical-radicals/e/simplifying_radicals
Practice Set #2
https://www.khanacademy.org/math/arithmetic/exponents-radicals/radical-radicals/e/multiplying_radicals
Tutorial #3 (includes radical in denominator)
https://www.khanacademy.org/math/algebra-basics/core-algebra-foundations/square-roots-for-college/v/square-roots-and-real-numbers
Trigonometric Functions
Intro to Trig Tutorial
https://www.khanacademy.org/math/trigonometry/trigonometry-right-triangles/intro-to-the-trig-ratios/v/basic-trigonometry
How to Find the Missing Side Tutorial
https://www.khanacademy.org/math/trigonometry/trigonometry-right-triangles/trig-solve-for-a-side/v/example-trig-to-solve-the-sides-and-angles-of-a-right-triangle
How to Find the Missing Side Practice
https://www.khanacademy.org/math/trigonometry/trigonometry-right-triangles/trig-solve-for-a-side/e/trigonometry_2
How to Find the Missing Angle Tutorial
https://www.khanacademy.org/math/trigonometry/trigonometry-right-triangles/trig-solve-for-an-angle/a/inverse-trig-functions-intro
Inverse Trig Functions (Find the Missing Angles)
Tutorial
https://www.youtube.com/watch?v=NTuQWko0PfY
How to Find the Missing Angle Practice
https://www.khanacademy.org/math/trigonometry/trigonometry-right-triangles/trig-solve-for-an-angle/e/solve-for-an-angle-in-a-right-triangle


Factoring
Factoring Quadratic Expressions Tutorial
https://www.khanacademy.org/math/trigonometry/polynomial_and_rational/quad_factoring/v/factoring-quadratic-expressions
Factoring Quadratic Expressions Examples
https://www.khanacademy.org/math/trigonometry/polynomial_and_rational/quad_factoring/v/factoring-polynomials-1
Factoring Quadratic Expressions Practice Set
https://www.khanacademy.org/math/trigonometry/polynomial_and_rational/quad_factoring/e/factoring_polynomials_1
Factoring by Grouping Tutorial
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-by-grouping/v/factor-by-grouping-and-factoring-completely
Factoring by Grouping Basic Example
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-by-grouping/v/factoring-trinomials-by-grouping-1
Factoring by Grouping Example #1
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-by-grouping/v/factoring-trinomials-with-a-non-1-leading-coefficient-by-grouping
Factoring by Grouping Example #2
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-by-grouping/v/ex2-factoring-quad
Factoring by Grouping Example #3
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-by-grouping/v/u09-l1-t2-we3-factoring-trinomials
Factoring by Grouping Example #4
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-by-grouping/v/factoring-trinomials-by-grouping-4
Factoring by Grouping Example #5
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-by-grouping/v/factoring-trinomials-by-grouping-5
Factoring by Grouping Example #6
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-by-grouping/v/factoring-trinomials-by-grouping-6
Factoring by Grouping Tutorial
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-by-grouping/e/factoring_polynomials_by_grouping_1
Factoring Special Products Tutorial
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-special-products/v/factoring-special-products
Factoring Difference of Squares Example #1
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-special-products/v/factoring-difference-of-squares
Factoring Difference of Squares Practice Set #1
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-special-products/e/factoring_difference_of_squares_1
Factoring Difference of Squares Practice Set #2
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-special-products/e/factoring_difference_of_squares_2
Factoring Perfect Square Trinomials Example
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-special-products/v/factoring-perfect-square-trinomials
Factoring Special Products Example
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-special-products/v/u09-l2-t1-we1-factoring-special-products-1
Factoring Quadratics with Two Variables Tutorial
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-quadratics-in-two-vari/v/factoring-quadratics-with-two-variables
Factoring Quadratics with Two Variables Example
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-quadratics-in-two-vari/v/factoring-quadratics-with-two-variables-example
Factoring Quadratics with Two Variables Practice Set
https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/factoring-quadratics-in-two-vari/e/factoring_polynomials_with_two_variables
Adding & Subtracting Radicals
Tutorial
https://www.khanacademy.org/math/arithmetic/exponents-radicals/radical-radicals/v/more-simplifying-radical-expressions
Practice Set
https://www.khanacademy.org/math/arithmetic/exponents-radicals/radical-radicals/e/adding_and_subtracting_radicals